Genome-wide methylation and expression profiling identify methylation-associated genes in colorectal cancer

Epigenomics
Xiaohui SunMaode Lai

Abstract

Aim: To identify methylation-associated genes in the carcinogenesis of colorectal cancer (CRC). Materials & methods: Genome-wide patterns of DNA methylation and gene expression in CRC tissues and adjacent normal tissues were determined and further validated in The Cancer Genome Atlas data and Chinese CRC patients, respectively. Gene overexpression and knockdown cells were constructed to investigate their biological roles in CRC. Results: After validations, hypermethylation of eight genes were found to be correlated with their reduced transcription, and hypomethyaltion of three genes were associated with their upregulation. CADM3, CNRIP1, GRHL2, GRIA4, GSTM2 and NRXN1 were associated with the overall survival of CRC patients. CNRIP1 and GSTM2 were mainly responsible for the proliferation in CRC cells. Conclusion: A total of 11 genes may be promising biomarkers for CRC.

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Related Concepts

Biological Markers
Gene Expression
Genes
Genome
Transcription, Genetic
Up-Regulation (Physiology)
Adjacent
DNA Methylation
Carcinogenesis
Cell Proliferation

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